Cryptography – Video cryptography – Video electric signal modification
Reexamination Certificate
2011-05-24
2011-05-24
Pearson, David J (Department: 2437)
Cryptography
Video cryptography
Video electric signal modification
C380S035000, C380S224000, C380S239000, C380S261000, C713S501000
Reexamination Certificate
active
07949133
ABSTRACT:
Systems and methods are disclosed for enabling encryptor devices to provide real-time messages having offset cryptoperiods according to an offset algorithm within common crypto-sync pulse boundaries. A master clock aligns the encryptor devices to a common crypto-sync pulse. Subsequently, a cryptoperiod offset aligner assigns a different offset value according to an algorithm to each encrypted service. The corresponding encryptor device then begins the cryptoperiod, during which real-time messages are transmitted, at the assigned offset value from the common crypto-sync pulse.
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